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- Title
One‐step thermal processing of BaCe<sub>0</sub><sub>.</sub><sub>8</sub>Y<sub>0</sub><sub>.</sub><sub>2</sub>O<sub>3</sub><sub>−δ</sub> hydrogen permeable multichannel hollow fiber membrane.
- Authors
Wang, Tianlei; Fan, Zheng; Wang, Shoufei; Zheng, Qiankun; Tan, Jinkun; Liu, Zhengkun; Zhang, Guangru; Jin, Wanqin
- Abstract
BaCe0.8Y0.2O3−δ (BCY) is the most widely studied proton‐conducting material and is frequently fabricated as a dense membrane for hydrogen separation. However, the limitation of preparing dense BCY membranes is the extremely high sintering temperature (>1500°C). Herein, the BCY 7‐channel hollow fiber membrane was prepared by a one‐step thermal processing (OSTP) with Co2O3 as a sintering aid. The results showed that the addition of 1 wt.% Co2O3 at a reduced temperature of 1350°C was the optimum composition and sintering condition for densification and forming a single perovskite‐phase structure. The hydrogen permeation flux of the BCY hollow fiber membrane reached up to 0.34 ml min−1 cm−2 at 900°C. The long‐term stability test was conducted for 300 h. The successful attempt of such a strategy provides a green and straightforward path for the preparation of dense ceramic proton‐conducting membranes on a large scale. This promotes its industrial application in high‐temperature hydrogen separation.
- Subjects
HOLLOW fibers; HYDROGEN; MEMBRANE separation
- Publication
AIChE Journal, 2022, Vol 68, Issue 6, p1
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.17607